Help plz i need it ASAP

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Which rule describes the composition of transformations that maps △abc to △a”b”c